org.apache.gobblin.source.extractor

Class WatermarkSerializerHelper

java.lang.Object

org.apache.gobblin.source.extractor.WatermarkSerializerHelper

public class WatermarkSerializerHelper
extends Object

Provides default implementation for converting a Watermark to a JsonElement, and vice versa. The class uses GSON to achieve this. This class provides a default way to serialize and de-serialize Watermarks, and is useful for implementing the Watermark.toJson() method.

Constructor Summary

Constructors

Constructor and Description
WatermarkSerializerHelper()

Method Summary

Modifier and Type	Method and Description
static <T extends Watermark> T	convertJsonToWatermark(com.google.gson.JsonElement jsonElement, Class<T> clazz) Converts a JsonElement into the specified class type using the Gson.fromJson(JsonElement, Class) method.
static com.google.gson.JsonElement	convertWatermarkToJson(Watermark watermark) Converts a Watermark to a JsonElement using the Gson.toJsonTree(Object) method.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WatermarkSerializerHelper

public WatermarkSerializerHelper()

Method Detail

convertWatermarkToJson

public static com.google.gson.JsonElement convertWatermarkToJson(Watermark watermark)

Converts a Watermark to a JsonElement using the Gson.toJsonTree(Object) method.

Parameters:

watermark - the Watermark that needs to be converted to json.

Returns:

a JsonElement that represents the given Watermark.

convertJsonToWatermark

public static <T extends Watermark> T convertJsonToWatermark(com.google.gson.JsonElement jsonElement,
                                                             Class<T> clazz)

Converts a JsonElement into the specified class type using the Gson.fromJson(JsonElement, Class) method.

Parameters:

jsonElement - is a JsonElement that will be converted into a Watermark.

clazz - is the Class that the JsonElement will be converted into.

Returns:

an instance of a class that extends Watermark.